md-checkbox: links in label do not work

[epelc]

When you have a link within an md-checkbox clicking on the link toggles the checkbox instead of opening the link. Example

 <md-checkbox ng-model="user.AcceptedTerms">
    I agree to the <a ui-sref="legal.tos">Terms of Service</a>
</md-checkbox>

I also tried to add ng-click="$event.stopPropagation()" and ng-click="$event.stopPropagation()" to the <a>. It also doesn't work if you use an href instead of ui-sref.

[ThomasBurleson]

@epelc - please use lowerCamelCase name prefixes (@see Issue Submissions)

[epelc]

@ThomasBurleson Sorry about that

[ThomasBurleson]

@epelc - No worries. You are a great contributor; hence my using your submission to set standards/precedence ;-)

[epelc]

@ThomasBurleson Thank you. I hope I can contribute more soon.